2-Amino-2-thiazoline. VIII. Nonregioselective reaction of 2-amino-2-thiazoline with benzoyl isothiocyanate to give a thermally unstable thiourea and a thiazolotriazine

1975 ◽  
Vol 40 (13) ◽  
pp. 2000-2002 ◽  
Author(s):  
Daniel L. Klayman ◽  
Thomas S. Woods
2018 ◽  
Vol 2018 ◽  
pp. 1-5 ◽  
Author(s):  
Huda Misral ◽  
Suhaila Sapari ◽  
Tajudin Rahman ◽  
Nazlina Ibrahim ◽  
Bohari M. Yamin ◽  
...  

Isomers of monothioureas, 2a–2d, derived from the reaction of disubstituted benzoyl isothiocyanate and dibenzylamine were synthesised and characterised by using elementary analysis CHNS and IR, 1H NMR, and 13C NMR spectroscopies. The compounds were screened for their in vitro antibacterial activity by using selected Gram-positive bacteria, and moderate inhibition activity was displayed for compound 2b with the value of inhibition zone 11 ± 0.8 mm at a concentration of 50 mg/ml. The outcomes of Lipinski’s rule of five assessment appeared to be in agreement with all compounds as they adhered to most of the rules, in which they can be preliminarily classified as active drug-like. The frontier molecular orbitals (HOMO and LUMO) for halogen-substituted 3,4-dichloro (2a) and 3,4-difluoro (2b) were also determined by applying the computational method of density functional theory (DFT) to determine their relationship as a molecular descriptor in antibacterial activities. The value of LUMO energy for compound 2b (1.8229 eV) is lower than that of compound 2a (1.8492 eV) which indicates higher antibacterial activities.


2015 ◽  
Vol 51 (12) ◽  
pp. 1818-1819 ◽  
Author(s):  
A. G. Mikhailovskii ◽  
A. S. Yusov ◽  
O. V. Gashkova

1975 ◽  
Vol 6 (42) ◽  
pp. no-no
Author(s):  
MARTIN COWIE ◽  
JAMES A. IBERS ◽  
YOSHIO ISHII ◽  
KENJI ITOH ◽  
ISAMU MATSUDA ◽  
...  

1988 ◽  
Vol 41 (8) ◽  
pp. 1221 ◽  
Author(s):  
DT Hurst ◽  
AD Stacey ◽  
M Nethercleft ◽  
A Rahim ◽  
MR Harnden

Some pyrimidin-2- and pyrimidin-4-amines were treated with isocyanates and isothiocyanates to give the corresponding disubstituted ureas or thioureas . A pyrimidin-2-amine is more reactive than a pyrimidin-4- amine in these reactions. 2-Aminothiazoles and thiazolinones also react to give the disubstituted ureas or thioureas . The use of ethoxycarbonyl or benzoyl isothiocyanate or isocyanate gives products which are readily hydrolysed to the pyrimidinyl or thiazolyureas or thioureas but with concomitant hydrolysis and decarboxylation of an ethoxycarbonyl substituent . The use of chlorosulfonyl or trimethylsilyl isocyanate gives the urea derivative without isolation of the intermediate disubstituted urea. Some related compounds were also synthesized.


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